sed -i 's/archive.ubuntu.com/old-releases.ubuntu.com/' /etc/apt/sources.list
sed -i 's/security.ubuntu.com/old-releases.ubuntu.com/' /etc/apt/sources.list
apt-get update
+
+ # DST Root CA X3 certificate expired on Sep 30, 2021. It was used by
+ # Let's Encrypt, which is what git.ceph.com relies on for HTTPS. Get the
+ # new Let's Encrypt root certificate in place and deactivate the old one
+ # (lines that begin with "!" are deselected).
+ apt-get install --only-upgrade ca-certificates libssl1.0.0
+ sed -i 's/mozilla\/DST_Root_CA_X3\.crt/!mozilla\/DST_Root_CA_X3\.crt/' /etc/ca-certificates.conf
+ update-ca-certificates
+
apt-get -y install nfs-common
mkdir /mnt/log
# 10.0.2.2 is the host